How popular is Picasaweb?

I was trying to place some numbers on how popular Picasaweb was in comparison to flickr, and turned up the following numbers via various means:

via Technorati (where 2 numbers are given, the smaller is the links from the past 180 days)

• picasaweb.google.com 112,475 links
• flickr.com 8,148,696 links (3,644,097 links from 204,288 blogs)

via ://URLFAN

• picasaweb.google.com: Ranks 710 out of 1,844,043 sites. Mentioned in 247 unique feeds. Mentioned in 440 posts.
• flickr.com: Ranks 1 out of 1,844,043 sites. Mentioned in 29778 unique feeds. Mentioned in 95950 posts.

via Google

• picasaweb.google.com: 402,000
• flickr.com: 24,700,000

 

A general picture emerges of interest in Picasaweb being at most a few percent of that in flickr.  Google Trends does not give hard numbers, but its graph is still telling - picasaweb (in red) barely shows up, whereas flickr (in blue) continues a long upward trend in popularity.

 

Note that these numbers are all tracking interest in the two sites - I'm still looking at how I can come up with numbers to indicate the numbers of photos hosted by each of the sites.